US4736905A - Automatic reverse mechanism for tape recorder - Google Patents

Automatic reverse mechanism for tape recorder Download PDF

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Publication number
US4736905A
US4736905A US07/042,726 US4272687A US4736905A US 4736905 A US4736905 A US 4736905A US 4272687 A US4272687 A US 4272687A US 4736905 A US4736905 A US 4736905A
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United States
Prior art keywords
cam
members
rotation transmitting
reel shaft
shafts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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US07/042,726
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English (en)
Inventor
Kunio Kido
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TANASHIN DENKI Co Ltd A CORP OF JAPAN
Tanashin Denki Co Ltd
Original Assignee
Tanashin Denki Co Ltd
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Assigned to TANASHIN DENKI CO., LTD., A CORP. OF JAPAN reassignment TANASHIN DENKI CO., LTD., A CORP. OF JAPAN ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KIDO, KUNIO
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
    • G11B15/093—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing driving condition of record carrier, e.g. travel, tape tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B65H18/103—Reel-to-reel type web winding and unwinding mechanisms
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/26—Driving record carriers by members acting directly or indirectly thereon
    • G11B15/28—Driving record carriers by members acting directly or indirectly thereon through rollers driving by frictional contact with the record carrier, e.g. capstan; Multiple arrangements of capstans or drums coupled to means for controlling the speed of the drive; Multiple capstan systems alternately engageable with record carrier to provide reversal
    • G11B15/29—Driving record carriers by members acting directly or indirectly thereon through rollers driving by frictional contact with the record carrier, e.g. capstan; Multiple arrangements of capstans or drums coupled to means for controlling the speed of the drive; Multiple capstan systems alternately engageable with record carrier to provide reversal through pinch-rollers or tape rolls
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/44—Speed-changing arrangements; Reversing arrangements; Drive transfer means therefor
    • G11B15/442—Control thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/45—Audio or video tape players, or related mechanism
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19502—Pivotally supported

Definitions

  • This invention relates to an automatic reverse mechanism for a tape recorder.
  • the automatic reverse mechanism detects it and switches the actuated pinch roller from a left-hand pinch roller to a right-hand pinch roller and vice versa.
  • the former automatic reverse mechanisms are equipped respectively with electromagnetic plungers and hence have complex structures. They are accordingly disadvantageous for dimensional reduction.
  • the latter automatic reverse mechanisms generally have such a structure that a pin is provided upright on a flywheel and a pinch roller changeover mechanism is triggered by the pin. This structure is however accompanied by a potential danger that the balance of the flywheel would be impaired. It also involves another potential danger that the mechanism could malfunction as a result of detection of a tentative increase of the tape tension at the time of start.
  • FIGS. 4 and 5 illustrate an automatic reverse mechanism for a tape recorder, which has solved such problems.
  • An application for patent has already been filed thereon by the present assignee (Japanese patent application No. 192835/1983).
  • FIG. 4 illustrates the automatic reverse mechanism with a right-hand reel shaft 1a being in rotation
  • FIG. 5 illustrates the same automatic reverse mechanism in the course of its change from the state shown in FIG. 4 to another state in which a left-hand reel shaft 1b is rotated.
  • capstans 3a,3b, pinch rollers 4a,4b and the above-mentioned reel shafts 1a,1b are disposed respectively in a symmetrical relation.
  • Small diameter gears 5a,5b and flywheels 6a,6b are respectively secured on the capstans 3a,3b.
  • turnable members 7a,7b turnably about their corresponding capstans 3a,3b.
  • Rotation transmitting units composed in combination of large diameter gears 8a,8b and small diameter gears 9a,9b respectively are supported on one ends of the turnable members 7a,7b via shafts 10a,10b.
  • Eccentric circular cam surfaces 11a,11b are formed respectively about the shafts 10a,10b.
  • pushing projections 12a,12b are also provided integrally with the shafts 10a,10b at positions where the eccentric cam surfaces 11a,11b have the maximum radii.
  • the other ends of the turnable members 7a,7b terminate in bent end portions 13a,13b.
  • the pinch rollers 4a,4b are supported on brackets 15a,15b, which are pivotal about pivots 14a,14b respectively, so that the pinch rollers 4a,4b can be releasably brought into contact with their corresponding capstans 3a,3b. Bent edge portions 16a,16b are also provided on the respective brackets 15a,15b.
  • the changeover bar 17 also defines openings 20a,20b which receive the bent edge portions 16a,16b of the brackets 15a,15b respectively. Tilted edges 21a,21b are formed by parts of the openings 20a,20b.
  • a two-state switch lever 25 which is pivotal in a two-state fashion between paired stopper pins 23 and 24 by a toggle spring 22 is provided in the vicinity of one end of the changeover bar 17.
  • These two-state switch lever 25 and toggle spring 22 constitute a pinch roller changeover mechanism together with the changeover bar 17.
  • the large diameter gears 8a,8b and small diameter gears 9a,9b which in combination constitute the rotation transmitting units, the large diameter gears 8a,8b are maintained in meshing engagement with the small diameter gears 5a,5b provided as unitary members with the capstans 3a,3b respectively, while the small diameter gears 9a,9b are selectively engageable with large diameter gears 26a,26b provided coaxially with the reel shafts 1a,1b.
  • the meshing engagement between the gears 9a and 26a and that between the gears 9b and 26b are controlled respectively by the turning movements of the turnable members 7a,7b.
  • Both turnable members 7a,7b are however biased by their corresponding tension springs 27a,27b in such directions that the gears 9a,9b are brought into meshing engagement with their corresponding gears 26a,26b.
  • the turning movements of the turnable members 7 a,7b are controlled by the horizontal movement of the changeover bar 17.
  • the turnable member 7a,7b and changeover bar 17 are linked together in such a way that while one of the gears (for example, the right-hand gear 9a) is maintained in meshing engagement with the gear 26a, the other gear 9b is maintained out of engagement from the gear 26b.
  • Friction mechanisms (not shown) are interposed between the reel shafts 1a,1b and the rotary members 28a,28b and between the reel shafts 1a,1b and the large diameter gears 26a,26b respectively.
  • the large diameter gear 26a can still be allowed to rotate even after the rotation of the reel shaft 1a has been stopped. In this case, the corresponding friction mechanism undergoes slipping.
  • Designated at numeral 30 is a fixing plate, on which cam followers 31a,31b and auxiliary holding members 32a,32b are pivotally supported.
  • the cam followers 31a,31b have contact portions 33a,33b at locations farthest from their fulcrums, pressure receiving portions 34a,34b located respectively on the orbits of revolutions of the pushing and urging portions 29a,29b, and elastic fingers 35a,35b in the vicinity of the fulcrums.
  • the auxiliary holding members 32a,32b have a substantially L-like configuration. Lower arms 36a,36b are located outside the shafts 10a,10b, while upper arms 37a,37b are positioned in opposition to the elastic fingers 35a,35b of the cam followers 31a,31b.
  • the right-hand pinch roller 4a is in contact under pressure with the capstan 3a and the rotation of the capstan 3a, the direction of which is indicated by an arrow, is being transmitted via the gears 5a,8a,9a,26a and the unillustrated friction mechanism to the right-hand reel shaft 1a.
  • the rotary power of the reel shaft 1a is being transmitted to the cam follower 31a by way of the pushing and urging portion 29a, whereby the contact portion 33a of the cam follower 31a is maintained in sliding contact with the cam surface 11a. So long as the contact portion 33a is maintained in sliding contact with the cam surface 11a in the above-described manner, the contact portions 33a is maintained out of contact with the pushing projection 12a.
  • the upper arm 37b of the auxiliary holding member 32b is pressing the elastic finger 35b of the cam follower 31b so that the auxiliary holding member 32b in place of the pushing and urging portion 29b maintains the contact portion 33b of the cam follower 31b in sliding contact with the cam surface 11b.
  • a turning movement of the turnable member 7a causes the bent end portion 13a thereof to press the lug 19a of the changeover bar 17 from the right as shown in FIG. 5, thereby moving the changeover bar 17 leftwards.
  • the two-state switch lever 25 is caused to turn clockwise while compressing the toggle spring 22.
  • the toggle spring 22 acts in the direction that the two-state switch lever 25 is turned further in the clockwise direction.
  • the changeover bar 17 is caused to move rapidly in the leftward direction.
  • the left-hand inclined edge 21b of the change-over bar 17 releases the bracket 15b.
  • the right-hand inclined edge 21a causes the bracket 15a to turn in a direction opposite to its biased direction.
  • the left-hand pinch roller 4b is brought into contact under pressure with the capstan 3b while the right-hand pinch roller 4a is separated from the capstan 3a.
  • the left-hand turnable member 7b is pulled by the spring 27b and is hence caused to turn clockwise, whereby the small diameter gear 9b is brought into meshing engagement with the large diameter gear 26b in the same rotation transmitting unit.
  • the left-hand reel shaft 1b is caused to rotate in the winding direction and a playback or recording operation is performed while the tape is being wound up on the left-hand reel.
  • accessory parts such as electromagnetic plungers are not required so that the size reduction of an automatic reverse mechanism is facilitated.
  • the above automatic reverse mechanism has such additional advantages that it does not impair the balanced rotation of the flywheels and owing to the actuation of the pinch roller changeover mechanism upon detection of each stop of the reel shafts, it is free from malfunction even if the tape tension is increased temporarily at start.
  • the rotary powers of the reel shafts 1a,1b are however transmitted to their corresponding cam followers 31a,31b by way of the unillustrated friction mechanisms, rotary members 28a,28b and pushing and urging portions 29a,29b. Accordingly, the rotary powers are lost significantly during their transmission from the reel shafts 1a,1b to the cam followers 31a,31b. In order to reduce their losses in the course of their transmission, the friction forces between the reel shafts 1a,1b and the corresponding rotary members 28a,28b have been set at a high level.
  • the above automatic reverse mechanism involves another problem that it requires many parts, since the rotary members 28a,28b are interposed between their corresponding reel shafts 1a,1b and cam followers 31a,31b, and the auxiliary holding members 32a,32b are provided as parts discrete from the cam followers 31a,31b in order to maintain the contact portion 33a or 33b of the cam follower 31a or 31b on the feeding side during takeup of a magnetic tape (i.e., the cam follower 31b in FIG. 4) in contact with the its corresponding cam surface 11a or 11b.
  • a magnetic tape i.e., the cam follower 31b in FIG.
  • An object of this invention is to provide an automatic reverse mechanism for a tape recorder, in which the back tension to be applied to a magnetic tape can be lowered and the running speed of the magnetic tape can hence been stabilized, and cam followers are each provided with a function to cut off the transmission of a rotary power to the reel shaft on the tape-feeding side.
  • an automatic reverse mechanism for a tape recorder in which capstans, pinch rollers and reel shafts are arranged respectively on both sides of an associated magnetic head, the capstans on both sides of the magnetic head and either one of said reel shafts are normally driven and rotated, the pinch roller on the same side as the rotating reel shaft is pressed against the corresponding capstan to cause the magnetic tape of a cassette inserted in the tape recorder to run toward the rotating reel shaft, and when the magnetic tape has been fully wound up on the rotating reel shaft, the running direction of the magnetic tape is automatically changed over, comprising:
  • rotation transmitting members arranged symmetrically relative to the magetic head, said rotation transmitting members being normally rotated about their corresponding shafts under rotary powers of the corresponding capstans so as to transmit the rotary powers to the corresponding reel shafts via corresponding friction mechanisms;
  • cam members having outwardly-arcuate cam surfaces and provided respectively on the rotation transmitting members with an interval between the cam members and the eccentric circular cam surfaces, said outwardly-arcuate cam surfaces being located on the sides opposite to the peripheral surfaces of the corresponding eccentric circular cam surfaces;
  • cam followers arranged symmetrically relative to the magnetic head so as to receive the rotation of the corresponding reel shafts via corresponding friction mechanisms
  • a pinch roller changeover mechanism including turnable members provided symmetrically relative to the magnetic head and supporting the shafts of the corresponding rotation transmitting members thereon, and when one of the rotation transmitting members moves to its non-engagement position relative to its corresponding reel shaft, said pinch roller changeover mechanism changing over the on/off state of the respective pinch rollers relative to their corresponding capstans in response to the movement of the rotation transmitting member;
  • each of said cam followers having a sliding portion slidable selectively against either the peripheral surface of the corresponding eccentric circular cam or the outwardly-arcuate cam surface of the corresponding cam member, an engageable portion formed at a position opposite to the sliding portion, and an arm portion engageable with one end of the corresponding turnable member; while the corresponding reel shaft is in rotation, said sliding portion being maintained in sliding contact with the peripheral surface of the corresponding eccentric circular cam so as to maintain the sliding portion apart from the outwardly-arcuate cam surface of the corresponding cam member; when the corresponding reel shaft has stopped and the sliding portion has come to the maximum essentric position of the corresponding eccentric circular cam, the sliding portion being brought into sliding contact with the outwardly-arcuate cam surface of the corresponding cam member and the engageable portion being stopped, whereby the corresponding rotation transmitting member is moved to a non-engagement position relative to the associated reel shaft; and after the rotation transmitting member has moved to the non-engagement position relative to the corresponding reel shaft, said arm portion being brought into engagement with the one end
  • each cam follower is maintained in a state of sliding contact with the peripheral surface of the corresponding eccentric circular cam by the engagement between the arm portion of the corresponding cam follower and the upper end of the associated turnable member.
  • FIG. 1 is a schematic top plan view of an automatic reverse mechanism according to one embodiment of this invention, which is suitable for use in a tape recorder;
  • FIG. 2 is a fragmentary schematic top plan view of the automatic reverse mechanism of FIG. 1, in which the mechanism is in a position different from its position in FIG. 1;
  • FIG. 3 is a fragmentary schematic top plan view of an automatic reverse mechanism according to another embodiment of this invention, which is suitable for use in a tape recorder;
  • FIG. 4 is a schematic top plan view of a conventional automatic reverse mechanism for a tape recorder.
  • FIG. 5 is a fragmentary schematic top plan view of the conventional automatic reverse mechanism of FIG. 4.
  • FIG. 1 illustrates the overall structure of the automatic reverse mechanism according to the first embodiment of this invention, which is suitable for use in a tape recorder.
  • the right-hand reel 1a is in rotation in FIG. 1.
  • FIG. 2 shows the same automatic reverse mechanism, which is in the course of a changeover from the state shown in FIG. 1 to a state in which the left-hand reel shaft 1b is rotated.
  • elements of structure which are identical in function to their corresponding elements of structure in FIGS. 4 and 5 are identified by like reference numerals.
  • the turnable members 7a,7b are different from their corresponding members in FIGS. 4 and 5. As shown in FIGS. 1 and 2, one ends, namely, the upper ends 46a,46 b of the turnable members 7a,7b extend in a direction opposite to the other ends, namely, the bent end portions 13a,13b from the positions where the gears 8a,8b;9a,9b, which constitute the rotation transmitting units. Besides, the following differences exist between FIGS. 1 and 2 and FIGS. 4 and 5.
  • eccentric circular cams 41a,41b are provided respectively about the shafts 10a,10b for the gears 8a,8b;9a,9b which constitute the rotation transmitting units.
  • crescentic cams 42a,42b are also provided with their inwardly-arcuate surfaces opposing the peripheral surfaces of the corresponding eccentric circular cams 41a,41b.
  • the cam followers 43a,43b are provided in such a way that the rotations of the reel shafts 1a,1b are transmitted thereto via unillustrated friction mechanisms.
  • the friction mechanisms may be of the same type as those employed in the conventional automatic reverse mechanism in FIGS. 4 and 5.
  • the cam followers 43a,43b are provided respectively with sliding portions 44a,44b, which are maintained in sliding contact with either the peripheral surfaces of the corresponding eccentric circular cams 41a,41b or the outwardly-arcuate cam surfaces of the corresponding crescentic cams, engageable portions 47a,47b formed at positions opposite to the sliding portions 44a,44b, and arm portions 45a,45b engageable with the upper ends 46a,46b of the corresponding turnable members 7a,7b.
  • the arm portions 45a,45b are substitutes for the auxiliary holding members 32a,32b in FIGS. 4 and 5 and as shown in FIGS. 1 and 2, are formed into a thin shape so that the arm portions 45a,45b have spring-like properties.
  • stopper pins 48a,48b are provided upright at fixed positions corresponding respectively to the engageable portions 47a,47b.
  • FIG. 1 shows that the right-hand pinch roller 4a is maintained in contact under pressure with the corresponding capstan 3a and the rotation of the capstan 3a, the direction of which is indicated by an arrow, is being transmitted to the right-hand reel shaft 1a via the gears 5a, 8a, 9a and 26a and the unillustrated friction mechanism.
  • the rotary power of the reel shaft 1a is transmitted to the cam follower 43a via the unillustrated friction mechanism and the sliding portion 44a of the cam follower 43a is maintained in sliding contact with the peripheral surface of the eccentric circular cam 41a.
  • the sliding portion 44a remains in sliding contact with the peripheral surface of the eccentric circular cam 41a, the sliding portion 44a is not brought into sliding contact with the outwardly-arcuate cam surface of the crescent cam 42a so that the rotation transmitting route from the capstan 3a to the reel shaft 1a via the gears 5a, 8a, 9a and 26a and the unillustrated friction mechanism is maintained.
  • the sliding portion 44b is not brought into sliding contact with the outwardly-arcuate cam surface of the crescentic cam 42b so that the left-hand rotation transmitting unit (the gears 8b,9b) remains apart from the large diameter gear 26b, in other words, is maintained in a state moved to a non-engagement position relative to the reel shaft 1b.
  • the left-hand inclined edge 21b of the change-over bar 17 releases the bracket 15b.
  • the right-hand inclined edge 21a causes the bracket 15a to turn in a direction opposite to its biased direction.
  • the left-hand pinch roller 4b is brought into contact under pressure with the capstan 3b and the right-hand pinch roller 4a is separated from the capstan 3a.
  • the left-hand turnable member 7b is pulled by the spring 27b and is hence caused to turn clockwise, whereby the small diameter gear 9b of the left-hand rotation transmitting unit is brought into meshing engagement with the corresponding large diameter gear 26b.
  • the left-hand reel shaft 1b is caused to rotate in the winding direction and a playback or recording operation is performed while the tape is being wound up on the left-hand reel.
  • the arm portions 45a,45b of the cam followers 43a,43b are provided with spring-like properties in the above embodiment.
  • FIG. 3 it is however possible to form upper ends 46a+,46b' (46b' is not illustrated) of the turnable members 7a,7b (7b is not illustrated) into a thin shape so as to impart spring-like properties to the upper ends 46a',46b' without imparting spring-like properties to arm portions 45a',45b' (45b' is not illustrated) of the cam followers 43a,43b.
  • the automatic reverse mechanism of this invention which is suitable for use in a tape recorder, can reduce the back tension to be applied to a magnetic tape. It is hence possible to stabilize the running speed of the magnetic tape. Owing to the requirement for fewer parts, it is possible to reduce the overall dimensions of the mechanism and also to increase the reliability of its operation.
  • the mechanism of this invention is suited for the reduction of the overall dimensions.
  • the balanced rotation of flywheels is not adversely affected.
  • the mechanism of this invention does not malfunction even if the tension of a magnetic tape increases temporarily at start, because the pinch roller changeover mechanism is actuated upon detection of stopping of reel shafts.

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US07/042,726 1986-11-21 1987-04-27 Automatic reverse mechanism for tape recorder Expired - Fee Related US4736905A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61-179413[U] 1986-11-21
JP1986179413U JPH0452831Y2 (enrdf_load_stackoverflow) 1986-11-21 1986-11-21

Publications (1)

Publication Number Publication Date
US4736905A true US4736905A (en) 1988-04-12

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ID=16065433

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Application Number Title Priority Date Filing Date
US07/042,726 Expired - Fee Related US4736905A (en) 1986-11-21 1987-04-27 Automatic reverse mechanism for tape recorder

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Country Link
US (1) US4736905A (enrdf_load_stackoverflow)
JP (1) JPH0452831Y2 (enrdf_load_stackoverflow)
GB (1) GB2197978B (enrdf_load_stackoverflow)
HK (1) HK48891A (enrdf_load_stackoverflow)
SG (1) SG76691G (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932605A (en) * 1987-05-02 1990-06-12 U.S. Philips Corporation Switching device in a magnetic-tape apparatus of the auto-reverse type
EP0398227A3 (en) * 1989-05-15 1992-07-08 Mitsubishi Denki Kabushiki Kaisha Magnetic recording and reproducing apparatus
US5655724A (en) * 1996-01-16 1997-08-12 Ford Motor Company Autoreverse cassette tape mechanism with tape-eating prevention

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680659A (en) * 1982-07-16 1987-07-14 Victor Company Of Japan, Limited Tape drive mechanism having torque transmitting gear assemblies

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680659A (en) * 1982-07-16 1987-07-14 Victor Company Of Japan, Limited Tape drive mechanism having torque transmitting gear assemblies

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932605A (en) * 1987-05-02 1990-06-12 U.S. Philips Corporation Switching device in a magnetic-tape apparatus of the auto-reverse type
EP0398227A3 (en) * 1989-05-15 1992-07-08 Mitsubishi Denki Kabushiki Kaisha Magnetic recording and reproducing apparatus
US5655724A (en) * 1996-01-16 1997-08-12 Ford Motor Company Autoreverse cassette tape mechanism with tape-eating prevention

Also Published As

Publication number Publication date
JPH0452831Y2 (enrdf_load_stackoverflow) 1992-12-11
GB2197978B (en) 1990-10-10
HK48891A (en) 1991-07-05
JPS6384740U (enrdf_load_stackoverflow) 1988-06-03
GB2197978A (en) 1988-06-02
SG76691G (en) 1991-11-15
GB8712541D0 (en) 1987-07-01

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Owner name: TANASHIN DENKI CO., LTD., 2-19-3, SHINMACHI, SETAG

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